CN207895044U - A kind of device for detecting automobile electronic switch electrical property - Google Patents
A kind of device for detecting automobile electronic switch electrical property Download PDFInfo
- Publication number
- CN207895044U CN207895044U CN201820163217.8U CN201820163217U CN207895044U CN 207895044 U CN207895044 U CN 207895044U CN 201820163217 U CN201820163217 U CN 201820163217U CN 207895044 U CN207895044 U CN 207895044U
- Authority
- CN
- China
- Prior art keywords
- program
- electrical property
- processing equipment
- power supply
- programmable power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of devices for detecting automobile electronic switch electrical property comprising processing equipment, programmable power supply, program-control electronic load, resistance meter, switching signal acquire port；Pass through the technical program, each separate unit test equipment of switch performance test is effectively coupled, and according to the operation principle of switch, have cured switching load analog circuit, simultaneously by the parameter setting interface being easily understood in processing equipment, make each instrument and equipment is automatic simultaneously to execute contact drop, contact resistance, contact chatter time measurement, and automatically generates the electrical property integration test report of switch；It repeats to build analog circuit when avoiding original progress individual event performance test, the troublesome operation of artificial each test result data of clerking makes test job efficiency and test result data reliability obtain quick raising.
Description
Technical field
The utility model is related to Automobile Measuring Techniques fields, more particularly to one kind is for detecting automobile electronic switch electrical property
Device.
Background technology
Automobile in process of production, is required according to automotive electronics component capabilities, is needed to automobile electronic switch electrical property, such as
Contact drop, contact resistance, contact chatter time are tested, and production in automobile industry manufacturer is to vehicle switch at present
This 3 electric performance tests, need to test simulation circuit be built using different equipment and instruments item by item, item by item separate individually test,
This test mode has work repetition efficiency low, and inconvenient test result data statistics and the technological deficiency of analysis.
Utility model content
For overcome the deficiencies in the prior art, the technical issues of the utility model is solved, which is to provide one kind, once to be examined
Survey the device of a variety of automobile electronic switch electrical properties.
In order to solve the above technical problems, technical solution content used by the utility model is specific as follows：
A kind of device for detecting automobile electronic switch electrical property comprising processing equipment, programmable power supply, program-controlled electric
Son load, resistance meter and switching signal acquire port；
The programmable power supply is connected with the processing equipment, and the anode and cathode of the programmable power supply output end are logical
The switching signal acquisition port is crossed with the anode and cathode of tested Switching Power Supply input terminal respectively to couple；
The program-control electronic load is connected with the processing equipment, and the anode of the program-control electronic load output end passes through
Switching signal acquisition port couples with tested output switching terminal, and the cathode of the program-control electronic load output end passes through line
Beam couples with the cathode of the programmable power supply output end；
The resistance meter is connected with the processing equipment, and the collection terminal of the resistance meter signal is described in
Switching signal acquisition port couples with tested switch contact output end.
To reach disposable detection contact drop, contact resistance, contact chatter time, inventor is in this technology side
Programmable power supply, program-control electronic load and resistance meter are innovatively gathered in case in the present apparatus；Wherein, may be used
The effect of programming power supply be by processing equipment LabVIEW softwares for by slowdown monitoring switch provide can digital editing DC operation it is electric
Pressure；The effect of the program-control electronic load be by computer LabVIEW softwares be switched on and off provide can digital editing it is straight
Flow field simulation loads；The effect of the resistance meter is to control resistance meter by setting by processing equipment LabVIEW softwares
The resistance data of fixed frequency collection, the tested switch contact of storage.
Benefit and above-mentioned technical proposal have effectively coupled each separate unit test equipment of switch performance test, and according to switch
Operation principle, have cured switching load analog circuit, while by the parameter setting interface being easily understood in processing equipment, making
Each instrument and equipment is automatic simultaneously to execute contact drop, contact resistance, contact chatter time measurement, and automatically generates out
The electrical property integration test of pass is reported；It repeats to build analog circuit when avoiding original progress individual event performance test, it is artificial written
The troublesome operation for recording each test result data makes test job efficiency and test result data reliability obtain quickly carrying
It is high.This programme can disposably detect contact drop, contact resistance, contact chatter time, improve working efficiency, and
Facilitate and test result is uniformly input to processing equipment progress data statistics and analysis, greatly facilitates vehicle manufacturer
The detection of the electrical property of resistance switch reduces time cost and equipment cost, to reduce production cost, improves production efficiency.
Preferably, the programmable power supply and/or program-control electronic load and/or resistance meter are connect by RS232 communications
Mouth is connected with the processing equipment.
Preferably, described device further includes data collecting card and Signal-regulated kinase；The data collecting card and the place
Reason equipment is connected；
The acquisition input port of the data collecting card is connected with the signal output port of the Signal-regulated kinase；Institute
The signal input port for stating Signal-regulated kinase acquires port by the switching signal and is joined by the contact output end of slowdown monitoring switch
It connects.
It should be noted that the effect of the Signal-regulated kinase is to acquire the voltage letter of tested switch contact output end
Number, and after voltage signal magnitude is modulated and is converted, recognizable and acquisition voltage signal is provided for data collecting card.
It should be noted that the effect of the data collecting card is to open tested by processing equipment LABVIEW softwares
Contact voltage signal, the contacting shaky time of pass are acquired by the frequency of setting, are stored.
It is highly preferred that the data collecting card is connected by PCI communication interfaces with the processing equipment.
Preferably, the processing equipment is computer.
Preferably, the programmable power supply is DC programmable power supplies.
Preferably, the quantity of the program-control electronic load is two or more.
It should be noted that according to actual conditions can by the quantity of the program-control electronic load be arranged two or two with
On, union is negative using different program-controlled electronics in one apparatus together in the present apparatus, can be adapted for different detection scenes
Detection different parameters are carried, equipment applicable popularity and efficiency are improved.
Compared with prior art, the beneficial effects of the utility model are：
1, the device for detecting automobile electronic switch electrical property of the utility model, is equipped with programmable power supply, program-controlled electric
Son load and resistance meter, have effectively coupled each separate unit test equipment of switch performance test, and according to the work of switch
Principle has cured switching load analog circuit, makes each instrument and equipment is automatic simultaneously to execute contact drop, contact electricity
Resistance, contact chatter time measure, and automatically generate the electrical property integration test report of switch；Avoid original progress individual event performance
Repeat to build analog circuit when test, the troublesome operation of artificial each test result data of clerking, make test job efficiency and
Test result data reliability has obtained quick raising；
2, the device for detecting automobile electronic switch electrical property of the utility model, is equipped with Signal-regulated kinase, makees
With being to acquire the voltage signal of tested switch contact output end, and after voltage signal magnitude is modulated and is converted, for number
Recognizable and acquisition voltage signal is provided according to capture card；
3, the device for detecting automobile electronic switch electrical property of the utility model, is equipped with the data collecting card,
Effect be by processing equipment LABVIEW softwares to by the contact voltage signal of slowdown monitoring switch, contacting shaky time by setting
Fixed frequency is acquired, stores.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be clearer and more comprehensible with advantage, it is special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the knot of the more preferably embodiment of the device for detecting automobile electronic switch electrical property of the utility model
Structure schematic diagram；
Fig. 2 is the original of the more preferably embodiment of the device for detecting automobile electronic switch electrical property of the utility model
Manage block schematic illustration；
Each reference numeral is：1, computer；2, DC programmable power supplies；3, program-control electronic load；4, resistance meter；5, it opens
OFF signal acquires port.
Specific implementation mode
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model is taken,
Below in conjunction with attached drawing and preferred embodiment, to foundation specific embodiment of the present utility model, structure, feature and its effect, in detail
Carefully it is described as follows：
It is the more preferably embodiment party of the device for detecting automobile electronic switch electrical property of the utility model as shown in Figure 1
The structural schematic diagram of formula, described device include the computer 1 as processing equipment, the DC programmable power supplies as programmable power supply
2, program-control electronic load 3, resistance meter 4 and switching signal acquire port 5；
The DC programmable power supplies are connected with the computer, the anode and cathode of the DC programmable power supplies output end
Port is acquired by the switching signal with the anode and cathode of tested Switching Power Supply input terminal respectively to couple；
The program-control electronic load is connected with the computer, and the anode of the program-control electronic load output end passes through institute
It states switching signal acquisition port with tested output switching terminal to couple, the cathode of the program-control electronic load output end passes through harness
Couple with the cathode of the DC programmable power supplies output end；
The resistance meter is connected with the computer, and the collection terminal of the resistance meter signal is opened by described
OFF signal acquisition port couples with tested switch contact output end.
It is the basic embodiment of the technical program above.Fig. 2 is the principle framework schematic diagram of the present apparatus, wherein DC can
The effect of programming power supply be by computer LabVIEW softwares for by slowdown monitoring switch provide can digital editing DC operation it is electric
Pressure；The effect of the program-control electronic load be by computer LabVIEW softwares be switched on and off provide can digital editing it is straight
Flow field simulation loads；The effect of the resistance meter is to control resistance meter by setting by computer LabVIEW softwares
Frequency collection, storage be tested switch contact resistance data.Benefit and above-mentioned technical proposal, have effectively coupled switch performance survey
Each separate unit test equipment of examination, and according to the operation principle of switch, switching load analog circuit is had cured, while by computer
In the parameter setting interface that is easily understood, make each instrument and equipment is automatic simultaneously execute contact drop, contact resistance, touch
Point shaky time measures, and automatically generates the electrical property integration test report of switch；Avoid original progress individual event performance test
Shi Chongfu builds analog circuit, and the troublesome operation of artificial each test result data of clerking makes test job efficiency and test
Result data reliability has obtained quick raising.This programme can disposably detect contact drop, contact resistance, contact
Shaky time improves working efficiency, and facilitates and test result is uniformly input to computer progress data statistics and analysis, pole
The detection of the big electrical property for facilitating vehicle manufacturer resistance switch, reduces time cost and equipment cost, to subtract
Few production cost, improves production efficiency.
As a kind of preferred embodiment, in the present embodiment, the program-control electronic load can be arranged two, i.e.,
Such as the program-control electronic load A and program-control electronic load B in Fig. 2；Program-control electronic load A is for high current (DC1A-50A) load electricity
The simulation on road, program-control electronic load B is used for the simulation of low current (DC1mA-999mA) load circuit, program-controlled by two sizes
The switching of electronic load improves the precision of load current, it is ensured that test data is accurate；Two program-control electronic loads of setting can be distinguished
Suitable for different detection scenes, the scope of application is more extensive, improves equipment applicable popularity and efficiency.
As a kind of preferred embodiment, in the present embodiment, described device further includes data collecting card and signal
Conditioning module；The data collecting card is connected with the computer；The acquisition input port of the data collecting card with it is described
The signal output port of Signal-regulated kinase is connected；The signal input port of the Signal-regulated kinase is believed by the switch
Number acquisition port couple with by the contact output end of slowdown monitoring switch.The effect of the Signal-regulated kinase is to acquire is touched by slowdown monitoring switch
The voltage signal of point output end, and after voltage signal magnitude is modulated and convert, provided for data collecting card can recognize that with
The voltage signal of acquisition；And the effect of the data collecting card is through computer LABVIEW softwares to being touched by slowdown monitoring switch
Point voltage signal, contacting shaky time are acquired by the frequency of setting, are stored.Work as in a kind of more specific embodiment
In, the data collecting card is connected by PCI communication interfaces with the computer.
As a kind of preferred embodiment, in the present embodiment, the programmable power supply and/or program-control electronic load
And/or resistance meter is connected by RS232 communication interfaces with the processing equipment.
The course of work and principle of the present embodiment are as follows：
LABVIEW program softwares may be used by the contact voltage of switch in the computer of this switch electric property detection device
Three kinds of drop, contact resistance, contact chatter time detection functions are integrated into same test circuit and man-machine interface.
In this software of application, specific facilities include：
Man-machine interface is divided into program main interface and two sub- options are arranged in communication interface.
Wherein communication interface setting interface can select to connect the Intelligent Instrument for meeting SCPI programmable instrument standard instruction sets
Device (including DC programmable power supplies, program-control electronic load, instrument for measuring DC resistance), after instrument is switched on connection computer,
LABVIEW program softwares generate unique corresponding VISA virtual instrument softwares system port numbers automatically according to the intrinsic parameter of instrument,
And it keeps coupling；
Program main interface includes measurement parameter setup module, test and result display module.
Measurement parameter setup module includes DC programmable power supplies operating voltage, operating current parameter setting, and program-controlled electronic is negative
Carry operating current setting, instrument for measuring DC resistance operating current, test speed setting, the setting of data collecting card measurement frequency.
Performance test and result display module include that voltage measurement starts control, resistance measurement starts control and real-time display
Tested switch contact voltage drop, contact chatter time, contact resistance result data；
Data sheet module includes that sample ID, sample model, sample number into spectrum, contact number, data storing path are filled in
Frame and data record control；
In this software of application, the specific working mode of device is as follows：
(1) contact voltage and shaky time measure：
a1：Start [1] control, it is 1 to set corresponding boolean value, starts voltage measuring mode；LABVIEW programs pass through tune
Take VISA drivings subprogram will:SOUR:VOLT XX、:SOUR:CURR XX、:OUTPON orders are sent to by RS232 interface
DC programmable power supplies, i.e. DC programmable power supplies open work by voltage, the current parameters of the setting of program main interface；Simultaneously；
LABVIEW programs will:CURR XX、：INPUT ON orders are sent to program-control electronic load, i.e. program-controlled electronic by RS232 interface
Load opens work by the current parameters of program main interface setting；Wherein XX represents corresponding setting value in program main interface.
a2：Be again started up [1] control, set corresponding boolean value be 0 when, then exit voltage measuring mode.
A3：After starting voltage measuring mode, LABVIEW programs are by reading DC programmable power supplies, program-control electronic load
VISA drives the return parameters value of subprogram, and such as wherein corresponding " mistake output " state value is 0, that is, indicates control command hair
Send success；LABVIEW programs drive subprogram by the analog input channel serial number of acquiescence by called data capture card DAQmx
AI0 and corresponding set of frequency parameter are sent to data collecting card by pci interface, start simultaneously at and are sent by the period of 100ms
Read the order of AIO buffer to ports data.
a4：If DC programmable power supplies, two equipment any of which of program-control electronic load " mistake output " state value are 1, i.e. table
Show that order sends failure, then it is 0 to set startup control boolean value, exits voltage measurement.
a5：After completing step a3, LABVIEW programs read the return parameters of data collecting card DAQmx driving subprograms,
If wherein corresponding " mistake output " state value is 0, that is, indicate the success of voltage acquisition digital independent, then LABVIEW programs are transferred
Contact voltage and contact chatter time subprogram are calculated and are judged, and show contact voltage and contact chatter time number of results
According to.
a6：It is 1 as data collecting card DAQmx drives return parameters " mistake output " state value of subprogram, that is, indicates electricity
Gathered data is pressed to read failure, then it is 0 to set startup control boolean value, exits voltage measurement.
a7：After completing step a5, it is 0 such as to press startup [1] control again and set corresponding boolean value, then
LABVIEW programs drive subprogram to send respectively by transferring VISA first:OUTP OFF、:INPUTOFF orders, that is, close DC
Then programmable power supply, program-control electronic load transfer DAQmx driving subprograms and close acquisition port, finally exit voltage measurement.
(2) resistance measurement：
b1：Start [2] control when pressing, it is 1 to set corresponding boolean value, start-up resistor measurement pattern；LABVIEW programs
Drive subprogram will by transferring VISA:IMP:RES:RANG XX、:APER XX order (i.e. resistance test electric current, resistance test
Speed command, wherein XX represent corresponding arrange parameter value in program main interface) D.C. resistance survey is sent to by RS232 interface
Try instrument.
b2：When pressing startup [2] control again, it is 0 to set corresponding boolean value, then exits resistance measurement pattern.
b3：After start-up resistor measurement pattern, LABVIEW programs read the return parameters value of VISA driving subprograms, such as it
In corresponding " mistake output " state value be 0, that is, indicate control command send successfully, then LABVIEW programs start to transfer VISA
It drives subprogram to be read as the period using 100ms and sends resistance meter port data.
b4：If LABVIEW programs read the return parameters value that VISA drives subprogram, " mistake output " state value is 1, i.e.,
Indicate that control command sends failure, then it is 0 to set startup [2] control boolean value, that is, exits resistance measurement.
b5：After completing step b3, LABVIEW programs transfer the return parameters of VISA digital independent subprograms, such as wherein
Corresponding " mistake output " state value is 0, that is, indicates that resistance data is read successfully, then show resistivity measurements data.
b6：LABVIEW programs transfer the return parameters of VISA digital independent subprograms, and such as " mistake output " state value is 1,
Indicate that resistance reads data failure, then it is 0 to set startup [2] control boolean value, that is, exits resistance measurement.
b7：After completing step b5, it is 0 such as to press startup [2] control again and set corresponding boolean value, then
LABVIEW programs drive subprogram to close resistance meter port by transferring VISA, finally exit resistance measurement.
(3) data sheet：
c1：When pressing record control, it is that 1, LABVIEW program called datas preserve subprogram to set corresponding boolean value,
Contact drop, contact chatter time, contact resistance result data are written by specified data store path《Switch electricity
Performance synthesis test report》, wherein sample message is by corresponding data sheet setting input in program main interface.
c2：It records control to operate for trigger-type, often press next time, LABVIEW programs execute a called data and preserve son
After program, the boolean value for recording control is set to 0 automatically, exits logging program.
c3：《Switch electrical property integration test report》Using Microsoft Excel softwares into edlin and printing.
The above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model
Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacing belongs to
In the utility model range claimed.
Claims (7)
1. a kind of device for detecting automobile electronic switch electrical property, which is characterized in that it includes processing equipment, may be programmed electricity
Source, program-control electronic load, resistance meter and switching signal acquire port；
The programmable power supply is connected with the processing equipment, and the anode and cathode of the programmable power supply output end pass through institute
Switching signal acquisition port is stated with the anode and cathode of tested Switching Power Supply input terminal respectively to couple；
The program-control electronic load is connected with the processing equipment, and the anode of the program-control electronic load output end is described in
Switching signal acquisition port couples with tested output switching terminal, the cathode of the program-control electronic load output end by harness and
The cathode of the programmable power supply output end couples；
The resistance meter is connected with the processing equipment, and the collection terminal of the resistance meter signal passes through the switch
Signal acquisition port couples with tested switch contact output end.
2. the device as described in claim 1 for detecting automobile electronic switch electrical property, which is characterized in that described programmable
Power supply and/or program-control electronic load and/or resistance meter are connected by RS232 communication interfaces with the processing equipment.
3. the device as described in claim 1 for detecting automobile electronic switch electrical property, which is characterized in that described device is also
Including data collecting card and Signal-regulated kinase；The data collecting card is connected with the processing equipment；
The acquisition input port of the data collecting card is connected with the signal output port of the Signal-regulated kinase；The letter
The signal input port of number conditioning module acquires port by the switching signal and couples with by the contact output end of slowdown monitoring switch.
4. the device as claimed in claim 3 for detecting automobile electronic switch electrical property, which is characterized in that the data are adopted
Truck is connected by PCI communication interfaces with the processing equipment.
5. the device according to any one of claims 1-4 for detecting automobile electronic switch electrical property, which is characterized in that institute
It is computer to state processing equipment.
6. the device according to any one of claims 1-4 for detecting automobile electronic switch electrical property, which is characterized in that institute
It is DC programmable power supplies to state programmable power supply.
7. the device according to any one of claims 1-4 for detecting automobile electronic switch electrical property, which is characterized in that institute
The quantity for stating program-control electronic load is two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820163217.8U CN207895044U (en) | 2018-01-31 | 2018-01-31 | A kind of device for detecting automobile electronic switch electrical property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820163217.8U CN207895044U (en) | 2018-01-31 | 2018-01-31 | A kind of device for detecting automobile electronic switch electrical property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207895044U true CN207895044U (en) | 2018-09-21 |
Family
ID=63546311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820163217.8U Active CN207895044U (en) | 2018-01-31 | 2018-01-31 | A kind of device for detecting automobile electronic switch electrical property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207895044U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058082A (en) * | 2019-05-17 | 2019-07-26 | 田楚兵 | A kind of novel resistor detection method and resistor detecting device |
| CN111965401A (en) * | 2020-06-05 | 2020-11-20 | 嘉兴行适安车联网信息科技有限公司 | Method for simulating vehicle starting power supply |
| CN112462250A (en) * | 2020-11-13 | 2021-03-09 | 无锡中科电气设备有限公司 | Switching characteristic comprehensive test device |
| CN113110112A (en) * | 2021-05-12 | 2021-07-13 | 南通弘铭机械有限公司 | High-voltage switch running-in semi-physical simulation test system and control method |
| CN116339278A (en) * | 2022-11-24 | 2023-06-27 | 威凯检测技术有限公司 | Intelligent kitchen electric circuit control board detection system and evaluation method |
-
2018
- 2018-01-31 CN CN201820163217.8U patent/CN207895044U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058082A (en) * | 2019-05-17 | 2019-07-26 | 田楚兵 | A kind of novel resistor detection method and resistor detecting device |
| CN111965401A (en) * | 2020-06-05 | 2020-11-20 | 嘉兴行适安车联网信息科技有限公司 | Method for simulating vehicle starting power supply |
| CN111965401B (en) * | 2020-06-05 | 2023-03-24 | 嘉兴行适安车联网信息科技有限公司 | Method for simulating vehicle starting power supply |
| CN112462250A (en) * | 2020-11-13 | 2021-03-09 | 无锡中科电气设备有限公司 | Switching characteristic comprehensive test device |
| CN113110112A (en) * | 2021-05-12 | 2021-07-13 | 南通弘铭机械有限公司 | High-voltage switch running-in semi-physical simulation test system and control method |
| CN116339278A (en) * | 2022-11-24 | 2023-06-27 | 威凯检测技术有限公司 | Intelligent kitchen electric circuit control board detection system and evaluation method |
| CN116339278B (en) * | 2022-11-24 | 2023-12-12 | 威凯检测技术有限公司 | Intelligent kitchen electric circuit control board detection system and evaluation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207895044U (en) | A kind of device for detecting automobile electronic switch electrical property | |
| CN204832267U (en) | Chip test platform | |
| CN109917276A (en) | Multifunction circuit board automatic test equipment, test macro and test method | |
| CN103019940B (en) | A kind of electric energy meter embedded software half simulation testing device | |
| CN202600108U (en) | Testing system for printed circuit board | |
| CN105929278B (en) | A kind of unsteady flow module high voltage test macro and method | |
| CN203587761U (en) | Frequency converter mainboard tester | |
| CN106774241A (en) | The Auto-Test System and method of testing of high voltage transducer power unit control panel | |
| CN203178431U (en) | Full-automatic testing system for circuit boards | |
| CN208385012U (en) | A kind of test device and system | |
| CN110412976A (en) | A kind of function test system and its test method of electric machine controller PCBA board | |
| CN112379251A (en) | Relay circuit fault testing system and method | |
| CN203522710U (en) | Signal converter multifunctional detection apparatus | |
| CN106226679A (en) | For detecting frock and the method for testing thereof of embedded pos payment terminal mainboard | |
| CN111025050A (en) | Current response time testing device and method for automobile electromagnetic valve | |
| CN207181627U (en) | PCB circuit parameter automatic measurement systems | |
| CN111458634A (en) | Handheld power equipment relay on-line tester and testing method | |
| CN203788304U (en) | Device for testing function of hardware interface | |
| CN104198871B (en) | Electronic device tester and testing method thereof | |
| CN206281909U (en) | Based on bus type I/O cell board intelligent test device | |
| CN105445658A (en) | Contactor performance detection device | |
| CN203520072U (en) | Signal converter assembly detection device | |
| CN209728111U (en) | A kind of single-board testing equipment | |
| CN106707155A (en) | Small-capacity contactor acting characteristic test system and method | |
| CN209030217U (en) | A kind of power line communication production test macro |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |